LISTing Newsletter

LISTing Newsletter

Newsletter of the Long island Sinclair/Times Users Group

(Incorporating N.Y.T.S.E.) Febr uary 199 3
Issue

Next Meeting Feb 21.1993

Table Of Contents

жжжжж ЖЖ ЖЖЖЖЖЖЖЖЖ

PAGE 2: MEETING NOTES AND MEETING DATES
PAGE 9: Qt Comer by Gob Gilder

PAGE 5: Letter from Don Lambert

PAGE 6: Utility for Oliger Disk Drives

PAGE 7: Letter from Don Berry

PAGE 8: Program ilating by Don Berry

PAGE 10: Leiter from Fred M. Carpenter

2/57/70 Policy Annual ues... $16.02
Gane “sample” copy төрд upon reciept of a jarge SASE

Copies provided on EXCHANGE BASIS with other bone tide user groups. LIST ing
is published monthly except July and August by 2/57 Gong island Sinclair
Timex) Group, à nen profit user group.

ive are always looking for articles, programs, reviews, etc. to keep our
members Informed and entertained Vou maintain full copyright

Portions of this publication may де reproduced without written consent. Please
give credit to LIST wher reprinting articles:
4757 aisc/aimes any respensititity for any damage you тау do te your comp-
uter as а result of reading any articles in LIST ing.
Page 1

y
LISTO

HARVEY Е
БОЁЁРТ Шан бус

тон SRAFINGK i
4904444444444444444444444444444

EE СТЕНЕ INGUIRIES TO:

Hee T AREY RRIT
$ PERT LANE
VALLEY STREAM. N.Y. 11551

FLERSE SEND SUB SIGNS то:
LISTING
МЕ. FREDERIC STERN
P.O., BOX 284
HOLBROOK. Nov. 11741
Yt eR I HEHE ETH Е

HYTSE
4444444444444484444444444444444

NvTSE MEETS THE- THIRD- “HOMBRY : ан Ж,

THE MONTH RT: t
MISS EIMS RESTAURANT

PARK. BENE OUT

BETWEEN AND 22 ST.

MEETINGS тін 7.30 РМ.

aaa a a a a a a a a УДТ АУ АУЫ

COMING EVENT
HERES ERES SS
FEB. 21, 1993
FEB. 15.

MEETING MINUTES
REPORTED BY:
FRED STERN

JAN. 17, 1995
PiRERRRRRRRRRRRERRRERRRRRERERRRE
HARVEY 88-50 THE MEETING ТО
ORDER AT 2:45ЕМ,

HARVEY БЕМІМСЕС US THRT FEBRUARY
ІЗ DUES TIME, THE DATE ON THE
LISTING ADDRESS LABEL ІЗ WHEN
YOUR CUES ARE DO. DO NOT BE
DROPPED AS В LIST МЕМВЕВ, PRY
YOUR DUES.

IN CORRESPONDENCE WE БЕСЕТУЕР

Э RENEVALS AND A HUMBER
INFORMATION | REQUEST LETTERS. M
WE WERE SADDENED TO HERR THAT
JIM DUCAS 15 MOVING TO BOSTON.
WE ALL WISH HIM THE BEST SF LUCK,
ANG WE WILL MISS HIM AT OUR
MEETINGS

FRED ADVISED THAT БНЕНІНІЕН HAVE
HOT #5 YET BEEN HADE TO
Ta ЭЭ COMPANIES арботров IC”

55 вовосазтіме я COM-
PETES INFORMATION SHOW.

HARVEY INFORHEC 25 А LETTER
WE RECEIVED FROM ME. FRED
CARPENTER. (SEE PAGE 10) FRED

WE-DATED Я ЕВООЕСТ WHICH RPEEGR-
ED IN THE GEC. 1222 ISSUE ОҒ
LISTING, AND ADVIZED OF A EUG IM
THE PERSONAL PORTFOLIO MANAGER
PROGRAM FOR TRE 152058.

S Clete List $ LIST 4 LIST s
SELEFERERS SFE ESSA ESSE AELE EHTS

МЕМ BUSINESS

Ei Fee E REE

PRED INFORMED THE MEETING THAT
CUBSCOUT PACK 552 ПЕ £
WHICH MICHAEL ІЗ С MEMBER AND
FRED В WEELOS LEADER ІЗ IN NEED
OF A NEW SPONZOR, AS 8 NOT-FOR-
PROFIT ORGANIZATION, A REQUEST
WAS MADE THAT LIST BECOME THE
PACKS SPONSOR.

THIS MOVE pase” GIVE OUR GROUP

BOE GILDEC TOLD US SF A NEU DIG-
ITIZER THAT НЕ PURCHRSED FOR THE
GL, ‘SEE PAGE 2) EOS ADVISED

TREAT ae UILL
TION THE NEXT MEETING.

PAUL CHOMITZ TOLD US OF HIS TEIP
то ENGLAND. AND DONATED BOOKS
Нион MAGAZINES TO THE LIST

PARY

CLASSIFIEDS
15,5:5:43-544-44-444:2444444А434 344333
тн CLASSIFIED SECTION 15
AVAILABLE TO ALL LIST MEMBERS
FREE OF CHARGE.

THE ONLY RESTRICTION IS THAT
IT ІЗ TO ВЕ USED ONLY Бов ТНЕ

LISTING, LIST, AND ITS OFFICERS
CO NOT ENDORSE. WARRANTY ,
GUARANTEE ANY ӛт THE ITEMS
LISTED. IN THIS CLASSIFIED

PERERERERAERRERRYSERRRRRRRRRERAR

THE FOLLOWING PUBLICATIONS ARE
AVAILABLE ONLY THROUGH LIST:

2Х-81:751090 TECHNICAL TIDBITS
TECHNICAL TIDBITS PART II
SAVINGS AND LOAD ОР THE TIMEX
COMBUTE e
$4.00 EACH.

1 AM LOOKING FOR A SCHON INTERN-
fL KEY BOGRD INTERFACE WITH OF
WITHOUT THE PC KEYBOARD IN GOOD
OPERATING CONDITICH.CONTRCT

BOB GILDER ӨТ 516-541-227], ОР
БЭ JETT ERSSON PLACE, MASSaPEOUA

WANTED:
DRIVE (2068 Gee sean) i AR EEPRX:

312 NEWTON AVEN
овкаме, CR. ЕВЕ. -1280

8 FINAL UORD
RERRREURRRRAARRERESEREREERRRBEZRR
Mv NRME 15 FRED STERN AND I RM
THE EDITOR OF THIS EDITION OF
LISTING.

УЛЫГ THANKS TO; ТОМ SKRPINSKI
.BOB GILDER. DON BERRY, бома.
CRREERT. AND FRED CARPENTER FOR

THEIR HELP AND ASSISTANCE.

QL CURNER

Тһе day of Christmas eve was a very joyful one. It looked 11Ке Santa
brought me the very Christmas present I had longed for the past two
years. Santa was a friend and LIST member Paul Chomitz, owner of the
R.G.C. Travel Agency Ltd., NYC. Paul advised me that he would be in
London for two days and concented to call CL Systems when he arived іп
the UK and order their С0У1 QL Video Digitizer for me. The reason I
didn't place the order from them was that CL Systems only deals in cash -
no plastic.

In several past issues of QL WORLD there have been reviews for both the
SPEM digitizer (Italy) and the CL Systems (U.K.) digitizer which
generated much interest for me. I knew ! had to have one!

Just what does a video digitizer do? The video digitizer converts normal
video images into a digital format which can be saved to disk and/or
printed to an Epson or Epson compatible printer.

НИ ST

The video digitizer plugs into the rear of the QL ROM (eprom) port. А
standard double phono plug cable connects to a video source such as a
video tape player and the other end of the cable is accepted by the video
digitizer. That's all the hookup that is needed.

The digitizer has опе control called "Маск level'. The black level
Should be adjusted for the best picture quality while you are viewing the
video through the QL Monitor. Do not confuse black level with the
contrast or brightness control on your monitor. Black level affects the
pixels for the screen dumps, where contrast and brightness only affect
the screen image on the monitor.

The screen dump appearing with this article is а sample of а digitized
picture of Anita, my sister-in-law, using the screen dump procedure from
the software provided Бу СІ, Systems, printed on ап 014 Epson МХ-80
printer. Тһе Grey-scale із excellent because the, software selects MODE
8, which provides eight levels of shading "for ‘the grey-scale. І found
that using the monochrome mode of my monitor was best when using the
video digitizer opposed to using color.

I had some doubts about using the digitizer until І read through the
operating manual several times and then ran the software provided, which
is on a 3.5" disk. A menu appears within a few seconds of loading the
software and it із very easy to use, one keypress for each command and
either an action occurs or a prompt appears, such as in loading or saving
or printing screens. You can have а full screen, a quarter-screen or
four-quarter screen. You can Invert or have a Negative picture at any
time. You have the facilities to store a picture in memory, recall it at
any time or merge it with another picture.

Pixel density for а full size picture is 256 X 256 as opposed to 128 X
128 pixels for the quarter-screen mode.

Reading about a video digitizer does not give you the best perspective;
you have to either use it or see it in action. If you are interested in
obtaining one, contact CL Systems, 403 Chapter Road, Dillis Hill, London
NW2 5NG, U.K. Tel: 081-459-1351.

Cost is £99.00 plus £9.00 post & packing.

I will demonstrate the CQV1 video digitizer at the February LIST meeting
- бее you there..... Bob Gilder

FP E 08 CD Р
91:11:15 СО СИ ВО А

хх» С фае ALiver

Froa the desk of the Chairman
1501 KIBLINGER PLACE
AUBURN, IN 46706-3010
Tele: (219) 925-1372
11 25 1992

TRES. ROBERT MALLOY
3 PERRI LANE
VALLEY STREAM NY 11581

Dear Robert,

I see that my membership is running close to empty so I will vote for
another year of LISTing Newsletter. My $16.00 vote is enclosed.

About the only thing new is my playing with a program from Bill Pedersen
that gives the first 8 RPMs of a disk drive so that you can tell if it is in
the ball park of the correct RPM. According to the Tandon disk drive manual
the RPM has a tolerance of +-1.5% but according to Bill that is not right
since both the Larken and the Oliger disk interfaces have problems if the
speed is greater than 500 RPM. So that means that the speed should be
between 294.5 and 500. RPM. So far I only have the program for use on the
Oliger disk interface. The program is for the 1770 disk controller chip «о
it should work on the Larken and the FDD too. But someone will need to
change the program to allow that. What is off is the QUT port in the
program. In checking some junk drives I had one that was reporting an RPM of
423. and another that reported 228. Some drives have a multiturn pot on them
to tweak the RPM and some don't. The slow drive is a Tandon and it makes a
rubbing sound and besides it has а dragging feel when turned Бу hand.
Possible some lubrication will help, whatever the trouble is it 18 in the
spindle and I think in the part that descends onto the disk. The program
will also work on a 3.5 drive.

The important part is not the first one or two RPM but the following ones,
and the evenness of the RPM. I also noted that if it access a drive that is
not the one that was the last one selected that the first couple of RPM
varies more than when it is accessed the second time. This is very handy to
help pinpoint problems if you have been experiencing LOAD or SAVE failures.

Had a very interesting thing happen. I wanted to use the 3.5 drive and so 1
bought a kit to be able to use the 3.5 drive іп a full sized case. It came

— —with á pair öt extenders, one ТӨР converting the srs y "tg "the "Same
connector on a 5.25 disk drive and also a connector to convert the 5.5 drive
to the same drive fingers that is on the 5.25 drive. Wouldn't work. Flat out
refused to work. Much, much later I tested and found that the drive without
the cable adaptor would work but with would not. Visually the adaptor looks
good. But now I wonder - maybe one lead wasn't soldered to the plated thru
hole or else the plated through hole wasn't actually plated through. Another
day and another testing of the drive.

1'11 put in a copy of the drive speed program for someone to use (public
domain) if they have an Oliger disk interface. П- convert to use on the
Larken or FDD 2068. Also a copy of the screen.

Sinclairly yours,

Donald S. Lambert

i"

The program that Don described
із presented here. Also printed
the program listing is some

of the screen dumps Don sent.

^el pr Chive y

ESTING SERVICES
DISK SPEED MEASUREMENT

г
n
it
ВР
1 297.
2 297.
% 252:
8 587
7 87
в 29?
PRESS ANY KEY TO CONTINUE
Т7 ре!
22 DReve L
WIDJUP DISK TESTING SERVICES
DISK SPEED MEASUREMENT
The select will be
este eleration and
ta
ef ing, place a
к ectéd drive ana
зе
PRESS RNY KEY TO CONTINUE
Та Doo р >-

Te ENT DISK TESTING SERVICES
DISK SPEED MEASUREMENT

we you select will be
r acceleration and
speed.

proceeding, plac а а
our setected dri and
door.

за
— Se
E

(nao

iut IO RN

ANY KEY TO CONTINUE

моо вее?
fe CR
WIDJUP DISK TESTING SERVICES
DISK SPEED MEASUREMENT

drive you select wilt be
г acceleration and

б-108Л E ono

PRESS ANY KEY TO CONTINUE

S RESTORE 101: FOR n

m
а
e
©
Ni
m
N
o
9

205,51,156,56,-5,1
93,15,-21,851,201

DATA 6:1. 16, -2.19
254. 246,224,60.40.2.
0,231,231, TL 0,0,0,0.

- тоюш!
тос

Sec

овес

г-
io

ation and sustaine
B Before proceeding.
HL in Hg selecte
d close its door."
532 INPUT "RI ch drive?

іш
31 OUT RS PAUSE 60: OUT 18

STEP 8: LET Ш=РЕЕК п+256+РЕЕК
nel)

БЕН 257 0525755 (15050027171

rut ul LEN w$;6 THEN LET шф=шФ
Ди PRINT " ";N/2-20003;" "iw
538 INK 1: PLOT 8s!n-32224),704

2.54 (VAL w$-300): DRAW 2 овви
2.4: DRAW -4,0: DRAW 9, - DRAW
2,0: INK е
548 NEXT n: Оң ERR RESET
550 PRINT ''" PRESS ANY КЕЧ

ТО CONTINUE ": PAUSE 0: GO TO

99939 CLEAR SAVE //"“DISKSPEED"
LINE

11-18-92
1689 Locust St.
Benbrook, TX 76126

LIST

Б Peri Lane

Valley Stream, NY 11581
Gentiemen,

Hi from a new member. тапа
Hechaical Engineer by
professian, and enciosed is à
program Рог the newsletter.
Naturaliy, it is technical in
nature, like пе. It is 3 curve
Fit progran. Bata i5 entered
just once and 8 different curves
may be tested to see how
accurately they fit the data.
the data із а set of x and Ч
values. Ву regression, the
curves produce a formule to
approximate values of Y, given
X. The coefficients for the
equations as well as the
accuracy (correlation) are
computed. jv works surprisingly
fast, even on the trusty T5100€.
Since it is written entirely in
Везте, it соціа be typed
directly into а 152068 aise.

The best correlation 15 "1.8".

The closest curve to a
correlation of 1.0 15 the best
"fit", ffter selecting the best
"Pit", the curve may be tested
bs inputting values of X and
computing v.

The oniy hang-up is that ail
data (XN and Y), must be 2reater
than ©. This is Бесасте Рог
curves 2, 6, ?, and 8,
1ogarithims of input data are
computed. Since 1698 cf
negative numbers are uniefined,
this produces ап error message.
For negative data, the program
would have to be modified by
deleting the computations оғ
1095 (such аз SINX, 5108, etc.)
The variable зіпх means the Sum
оғ lm€x3, in case you uere
wondering. This means curves 2,
6. 7, and 8 cannot be used Рог
negative data.

This problem will be handled by

a polynomial curve Fit progran

that Г also have (if there is
interest in it). The polynonial
curve fit can easily handie
positive and negative data. `

1 would be interested to know
reader Feed back сп this
program. i

Sincerely,

Don Berry

MULTICURVE
ву DH BERRY 11-z-82

"THIS PROGRAM FITS 8
"OF X, Y CATA TO ам
"8 DIFFERENT CURVES.

ЖЕ

та“
un PRINT “ІЗ ENTERED JUST ONCE
PRINT ‘NOTE: DATA MUST BE >

UII (nz pe ff ут С Od

око ба “14000 ADDA бел
р]

530

o
e
e
e
е
ә

PRINT

БЕІМТ "INPUT 5 TO START”
PRINT

INPUT 55

IF $sz"$" вото 150

IF 54849557 шагы?) core

ANT TERE тор

хх
ЕТ E

Hor

PRINT “INPUT NO. OF DATA PO

SLMX4LM X
sSLNX2+(LN X) # (LN

zSYLHX4Y*LM X

%1/
105 T o sra
55: ЗҮрхҮ/
2158107 +17
515 2 315433 (Lev) #82
SxDY SOXDY + Ху
SLNY=SLNY4LN Y
SLNY2sSLNV24¢ (LN Y) € tLN

SXLMYSBXLNY4XXLM Y
SLMXLNY zSLNXLNY-4LM хан

87 KFT 51DX2z81DX24(1^/X)258
310 NEXT I

ари noe

A + ExX iLI

1
!

х
"

HERR

980 PRIHT
880 PRINT "2 -- Y
Lb eU i

1010 FRINT "3 -- Y
QUADRATIC)”

1020 PRINT

1638 PRINT “4 -- Y = AB

L
1040 PRINT
1050 PRINT “Б ---Үсі/ійжбеху [INU
ERSE LINEHR)"

1860 PRINT

1070 PRINT "B -- Y
METRIC)"

1080 PRINT

3858 PRINT "7 -- Y

1160 ЕВЇЧТ
1110 ЕБІМТ "B -- Y

1120 ГР Iur (Ес-2.7188813:7
1149 FF ІНІ. new мо, CHOICE"

A+BeL Nie)

ае 1

inve

н
>
ж
а
и
5
а
nr
o

як В (POW

AEs (Вах

1170 IF GoTo 1360
1189 ТЕ OTO 1622
1190 IF сото 1940
1200 IF GOTO 2259
1210 IF GOTO 2612
1220 IF сото 2972
1839 I сото 3328
1:40 IF сото 3750
1250 GOTO

1208 РЕМ ES FIT
LET Bst ПЕН г) / (INS
СЕН 55:88) Vy
15208 LET В< (37 -В 15),
1330 LET рса ТЕ “

1340 LET PDs (H#SX2-Sx 49%) + (NEST?
1250 LET R=(RN/RD}

1508 GOSUB 5080

1510 LET YaR+BEK > с с

1520 PRINT
1530 PRINT "FOR X
1535 PRIHT
1540 PRINT " Y
1550 FRIN

T
1550 PRIMI "ANOTHER хо? сем“

йн THEN GOTO 4170
же THEN | GOTO 1490

E
П SY-B¢SLN4) N
1650 LET RNs User CES -$Y SELNX) кін
БЕУ ӘСЕ
1650 LET НЭЭ қ азімха- ~SLN« #SLNXI #
„наЗУ2- EPA
70 LET Bz(RN/RD)
CLS
ЕКІНТ
ERINE “LOGARITHMIC "ODEL"

PRI

60596 6500

ЇР Age Y" THEN GOTO 1810
FEM LOG FIT

COSUE 4000

ізге
1229 LET ;/=A+B4LN X
1540 T
isse “FOR X s "X
21-13
126 i Ү ="
is
ies “ANOTHER 7? ysm"
1385
3 ES

THEM GOTO 4250
' THEN GOTO 1812

“ЕТІС
zasa LET Bz(MBXEY-SXB*5v)/(N&B8X
ҮЗ а
зү-Вазха)уы

да H&8X2Y-8X2*27)*(Hsà
1580 LET Abs (NXA -5ХВжӛзі) INGE
Y2-2Y*x2Y1

1290 LET, ВБа(РМУВГЭ

2010 PRINT
2020 PRINT “GUADRATIC MODEL:"
RINT

2020 PRINT "Y = A + BsXssz"
NT

M^ THEN GOTO 5220

Ұ" THEN GOTO 2160

2170 GOsUB ооо
2180 LET VsA+Beex

2190 PRINT
2200 PRINT "FOR X = бох
2210 PRINT
2220 PRINT " ҺА cH PNE

X7? UN)"

THEN GOTO 4330
ІНЕН GOTO 2162

Іс
GEESE E -5ісУужЕҮУ) ин-
aped

асы

“HYPERBOLIC MOCEL:”
“Yo Яо» Бух"
HOSE взор
IF БЕз"М" THEN GOTO i412
EM вото 2380

FEM I VERSE LINEAR

LET BsiMsSxDY-S3ée5400 4 Nes
Sxsax)

2638 LET Bz(GIDY-Bs5X)2H 0
Еб40 LET RFHziHs5XDY- SEE se
ME

PRINT “INVERSE LINEAR MODEL

00 PRINT
PRINT "
PRINT
EER Tu

= ЛСА + во"

me

Отуу ССА еу
г
"
Cot

PRINT "ANOTHER 2 (y.ui

XP тъ
оу еван ч

ұну-зу нун
Ni <3 8L MY

LET FDLz!M&BXB-EXsZX Фінетең
SL ДЕМИ
L САТИ

о

e

e

e Ih

O PRINT “GEOMETRIC more
е ERIHT

© PRINT "Y = HsBssx"
e FRINT

ә 20308 asoa

e
м
о
e
e
e

Ja C) IND FI OOS" Gb: Ta a Me c поп TOTO ра ра

Ti er ка Fa C6,

IF B$::"y" THEN GOTO 4550
ЇЕ ВЕ", THEM GOTO 3240
REN POUR .MOCEL

DG DIG CHO GR T G9 CO La
dU GI Gib) Gib GI n o a

8410 LET I::3LMY-BsSLHX) Mi
2420 LET В:ЕХЕ I

3430 LET RHz(UHSELNXLII -S HX &SLNY
ЕСЕП

3440 LET EDsIMEELHA2Z-ELH ағына +
IHsELIYZ-SLHUSLHYO

3452 БЕТ СЕСИИ!

ERENT “POWER MODEL:
FRIW

ЕБІМІ "Y = BsxkssE"
ЕБІМТ

БОБЧЕ 56500

REM POWER

с есес

LET Үшажхжзв

PRINT

ERIHT "FOR X = "ux
FRIHT

PRINT " Y zs UY
PRINT

PRINT “ANOTHER 7 (усы

THEN GOTO seca”
5. THEN COTO саза

REM EXPONENTIAL

70 LET Ba (мази -5X451 муз (Hx

3х5- Sx4SKi

3730 LET Ізі ЕМУ Bei) ғы

ТЕЕ LHY 3G iN

t
3810 LET враїмжвха- -BX48X:s (Me8LH
Y8-SLNY *8LN
3820 LET RI IRN/RD)
9838 CLS
3840 PRINT
3559 PRINT “EXPONENTIAL “IDEL:
3360 PRINT
3870 PRINT "Y = AsEse (Bers C
3880 PRINT " ЇЕ = 2.7814)"
$830 PRINT
329800 созив en
4020 БЕМ EXEBHEMT IAL
4030 GOSUS 5000
4040 EET EAD EENP (Bex)

4070 FRINT " NY
4080 FRINT
4090 FRINT "ANOTHER X т м)"

" THEN GOTO 4710
THEM GOTO 4020
FINAL DISPLAYS

“LINEAR MOSEL

“QURDCRATIC HOCEL

Bot Bexsez"

во
“HYPERBOLIC MODEL ^"
USE m A + Bee"
e6iéa

“GEOMETRIC

“INVERSE LINEAR MODEL

T

PRINT

ERIHT
ЕБІН”

РАТ

"a

"CORR

FEM БІЗ
FRINT "
PRINT
PRINT

FLRY
A=

"в
"CORR

"OK 7

RETURN

ст ABX"
сн
е `
m 3
EN
S
| =
ЗЕ
x X
чо
при XS
Ч S
TERRA
wo х
Bra SA
- 5 + 3

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29 рава

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Жү Q9 37

Nİ..
AN
SP
215549
Ян
21555
т 13
= “ыз |
S КЕ
2555

У
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ат е
ЭГ CM
“е

ЕЗ x
16 8
ES GM
до Е
EY

€ o

ое Ён
CO Nw
x ГӘ
35 N
3 2
зох

“GIVEN x,

“INPUT

ReEsSBU

“EXPONENTIAL го
Я+Е ++ (Bees

MODEL

CALI

x"

CONSTANTE
"a
iB
ELAT ION

CONSTANTE
“Та

"B
ELATION
Сеимъ“

THEN GOT?

92574 Л
буйг

Print At
7

244

т/с 2068 соди “ARSWAL

LATE

“R

ере

ese

" THEN RETURN

272

ле
SÉ
fe
EGG
ЖЕ
MEC
SEN
N* gu